Capital gains tax on trading

Family VIII · Regulation

Not to be confused with trading tax, withholding tax on dividends.

Capital gains tax on trading is a tax on the net profit from disposing of investments, not on the proceeds themselves. It applies to shares, derivatives, funds and other instruments, and the taxable amount is normally sale proceeds minus allowable acquisition and transaction costs. Whether a gain is taxed, at what rate, and whether losses can be offset varies by country and by how long the position was held.

How the taxable gain is computed

The starting point is the disposal proceeds. From these, the acquisition cost and permitted transaction costs (such as commission) are deducted to give the gain or loss. Many jurisdictions then apply an exemption threshold, a holding-period relief, or a separate rate schedule for short-term versus long-term holdings. Losses may be offset against gains within the same tax year, and in some countries carried forward, subject to local rules.

Reporting is usually done by the taxpayer, although brokers may issue a consolidated tax statement. Rules on cost basis, currency conversion and wash-sale restrictions differ between countries and should be checked against the relevant tax authority's guidance.

Worked example

CGT on a share disposal

Sale proceeds500 shares × 24.0012,000

Acquisition cost500 shares × 15.00−7,500

Commissionbuy 30 + sell 40−70

Taxable gain12,000 − 7,500 − 704,430

If the jurisdiction applies a 20% rate with no annual exemption, the tax due would be 4,430 × 0.20 = 886. A different holding period or local exemption would change that figure.

What varies by jurisdiction

Rate: may be a flat percentage, a progressive scale, or aligned with income tax.
Holding period: some countries tax short-term gains at a higher rate and give relief for long-term holdings; others make no distinction.
Annual exemption: a tax-free allowance may exist, and its size is set locally.
Loss relief: offsetting and carry-forward rules differ, as do restrictions on repurchasing the same asset.
Reporting: the broker's role in withholding or reporting varies; the legal obligation usually remains with the taxpayer.

Often confused with

trading tax: A trading tax is a levy on the transaction itself, such as a stamp duty or financial transaction tax charged on the value of a trade regardless of profit, whereas capital gains tax on trading is charged only on the realised profit from a disposal; the visible sign is that a trading tax appears on the contract note even when the position is sold at a loss.
withholding tax on dividends: Withholding tax on dividends is deducted at source from dividend payments by the payer or broker before the investor receives them, while capital gains tax on trading is assessed on the profit from selling an instrument and is typically paid separately by the investor; the visible sign is that withholding tax reduces the cash dividend on the payment date, whereas capital gains tax appears only after a disposal.

Capital gains tax on trading

How the taxable gain is computed

Worked example

What varies by jurisdiction

Often confused with

See also